[0001] The present invention relates to a sealing structure of a back door opening being
suitable for a lifting system back door and a lateral opening system back door according
to the preamble of independent claim 1.
[0002] A conventional sealing structure of a back door opening has a construction in which
a weatherstrip as a sealing member is attached onto a flange formed along the back
door opening of a body panel. With such a construction, sealing property for the back
door opening when the back door is closed is ensured.
[0003] This weatherstrip includes a base member having a substantial U-shape in cross section,
which is assembled to the flange. Moreover, the weatherstrip includes a pantograph-like
hollow seal member having an inclined protrusion brought into elastic contact with
an inner surface of the back door (refer to
Japanese Utility Model Unexamined Publication No. H4-95574 (published in 1992)).
[0004] Incidentally, as an opening/closing system of the back door, there is a lifting system
of lifting the back door upward of a vehicle. Moreover, as such an opening/closing
system, there is a lateral opening system of opening the back door in the vehicle
width direction. The lateral opening system includes both of a so-called double-doored
system of individually opening and closing two back doors in the vehicle width direction
and a system of opening and closing one back door in the vehicle width direction.
[0005] Here, on an upper end edge of the back door opening, a direction where the back door
is brought into press contact with the weatherstrip (direction where the back door
approaches the weatherstrip) when the back door is closed differs between the lifting
system and the lateral opening system. Therefore, it is necessary to allow an attachment
angle of the weatherstrip as well as the flange to differ between the lifting system
and the lateral opening system. For example, in the case of the back door of the lateral
opening system, the attachment angle of the weatherstrip is set at 0 degree (horizontal
direction substantially along a line in the vehicle fore-and-aft direction). As opposed
to this, in the case of the back door of the lifting system, it is necessary to incline
the weatherstrip upward while setting the attachment angle of the weatherstrip at
approximately 70 degrees with respect to the line in the vehicle fore-and-aft direction.
[0006] Moreover, document
JP 03-2814219 discloses a sealing structure according to the preamble of claim 1.
[0007] In the conventional sealing structure of the back door opening, as described above,
the attachment angle of the weatherstrip differs depending on the opening/closing
systems of the back door. Accordingly, there has been a problem that it is necessary
to fabricate different sealing structures of body panels in accordance with the opening/closing
systems of the back door, resulting in a corresponding cost increase.
[0008] The present invention has been made in order to solve the conventional problem as
described above. It is an object of the present invention to provide a sealing structure
of a back door opening as indicated above, which is capable of reducing the cost by
providing commonality to the sealing structures of the lifting system and the lateral
opening system.
[0009] According to the present invention, said object is solved by a sealing structure
according to claim 1.
[0010] Further embodiments are disclosed in the dependent claims.
[0011] The invention will now be described with reference to the accompanying drawings wherein;
FIG. 1A is a perspective view of a rear of a vehicle having a back door of a lifting
system, showing a sealing structure of a back door opening according to a first embodiment;
FIG. 1B is a perspective view of a rear of a vehicle having a back door of a lateral
opening system, showing the sealing structure of the back door opening according to
the first embodiment;
FIG. 2 is an enlarged cross-sectional view along a line A-A of FIG 1A, showing a state
before such a lifting system back door is closed;
FIG. 3 is an enlarged cross-sectional view along the line A-A of FIG. 1A, showing
a state where the lifting system back door is closed;
FIG. 4 is an enlarged cross-sectional view along a line B-B of FIG. 1B, showing a
state where such a lateral opening system back door is closed;
FIG. 5 is an enlarged cross-sectional view along a line C-C of FIG. 1A, showing a
state where the lifting system back door is closed;
FIG 6 is an enlarged cross-sectional view along a line D-D of FIG. 1B, showing a state
where the lateral opening system back door is closed;
FIG. 7A is a view showing a state where a weatherstrip is attached onto a flange so
that a hollow seal member can abut perpendicularly on an inner surface of the lateral
opening system back door when the back door is closed;
FIG. 7B is a view showing a state where the weatherstrip is attached onto a flange
so that the hollow seal member can abut perpendicularly on an inner surface of the
lifting system back door when the back door is closed;
FIG. 8 is an enlarged cross-sectional view showing a state where a lifting system
back door in a second embodiment is closed; and
FIG. 9 is an enlarged cross-sectional view showing a state where a lateral opening
system back door in the second embodiment is closed.
[0012] A description will be made below in detail of specific embodiments to which the present
invention is applied while referring to the drawings.
(First Embodiment)
[0013] A first embodiment is an example where a sealing structure of a back door opening
according to the present invention is applied to a vehicle including a lifting system
back door of FIG. 1A, in which a back door 3 is lifted upward of the vehicle, and
to a vehicle including a lateral opening system back door of FIG. 1B, in which back
doors 3 are opened in the vehicle width direction. Note that the lateral opening system
back door includes both of a so-called double-doored system (type of FIG. 1B) of individually
opening and closing two back doors in the vehicle width direction and a system (not
shown) of opening and closing one back door in the vehicle width direction.
[0014] In the sealing structure of the back door opening according to the first embodiment,
as shown in FIG. 2 to FIG. 6, a base member 21 of a weatherstrip 2 is engaged with
a flange 11 formed along a back door opening of a body panel 1. In such a way, sealing
property between the body panel 1 and the back door 3 is ensured when the back door
3 is closed by a hollow seal member 22 of the weatherstrip 2.
[0015] As shown in FIG. 2, the base member 21 of the weatherstrip is formed into a substantial
U-shape in cross section. Moreover, on opposite surfaces in an inside of the base
member 21, there are formed a plurality of retaining ribs 21a for inhibiting the base
member 21 from falling off from the flange 11 in such a manner that the retaining
ribs 21a are engaged with the flange 11, and are thereby brought into press contact
with the flange 11.
[0016] The hollow seal member 22 of the weatherstrip 2 is formed into a pantograph shape
(substantially rhombus shape) having an inclined protrusion 22a brought into elastic
contact with a back door inner surface 3a. Moreover, the hollow seal member 22 is
folded by being pushed by the back door 3 while having reaction force allowing the
hollow seal member 22 to be restored. The inclined protrusion 22a acts to control
a lying direction of the hollow seal member 22 when the hollow seal member 22 is pushed
by the back door inner surface 3a. Moreover, the inclined protrusion 22a acts to hermetically
seal a gap caused between the back door inner surface 3a and the hollow seal member
22 by unevenness in contact between the back door 3 and the weatherstrip 2. The inclined
protrusion 22a is formed so as to be directed to an outside (upward of a vehicle body)
of the back door opening with respect to an attachment angle of the weatherstrip 2
onto the flange 11. In such a way, the collapse direction of the hollow seal member
22 can be made to be directed to the outside of the back door opening.
[0017] The attachment angle of the weatherstrip 2 on an upper end edge of the back door
opening is set within an inclination angle range θ between a first angle (0 degree
as the horizontal direction along a line X in the vehicle fore-and-aft direction)
and a second angle (predetermined angle made with respect to the line X in the vehicle
fore-and-aft direction). The first angle is an angle in which the weatherstrip 2 is
attached so that the hollow seal member 22 can abut perpendicularly on the back door
inner surface 3a when the lateral opening system back door shown in FIG. 1B is closed.
The second angle is an angle in which the weatherstrip 2 is attached so that the hollow
seal member 22 can abut perpendicularly on the back door inner surface 3a when the
lifting system back
door shown in FIG. 1A is closed.
[0018] In the lateral opening system back door, the best sealing performance is obtained
when the weatherstrip 2 is attached at the angle of 0 degree as the horizontal direction.
Meanwhile, in the lifting system back door, the best sealing performance is obtained
when the weatherstrip 2 is attached to be inclined at 70 degrees. Heretofore, the
weatherstrip 2 has been attached at 0 degree and 70 degrees in the lateral opening
system back door and the lifting system back door, respectively. However, in the first
embodiment of the present invention, the attachment angle of the weatherstrip 2 is
set at an inclination angle of 35 degrees, which is just a middle between the first
angle (0 degree) and the second angle (70 degrees), so that the sealing performance
of the weatherstrip 2 can be ensured in both of the lateral opening system back door
and the lifting system back door.
[0019] Moreover, on a side wall of the base member 21 on a lying direction side of the hollow
seal member 22, a lying control rib 21b that controls the lying of the hollow seal
member 22 is formed integrally. The lying control rib 21 b is formed to be longer
so that a tip end thereof can protrude to an outside of the collapsed hollow seal
member 22.
[0020] Furthermore, as shown in FIG. 5, a construction is adopted, in which a fixing part
41 for a bumper 4 is formed at a position hidden by the lying control rib 21b in the
body panel 1 on a lower end edge of the back door opening. The fixing part 41 is,
for example, a bolt and the like.
[0021] Next, a description will be made of functions and effects of the sealing structure
of the back door opening according to the first embodiment.
[0022] On the upper end edge of the back door opening, a seal mode as shown in FIG. 3 is
formed in the case of the lifting system back door, and a seal mode as shown in FIG.
4 is formed in the case of the lateral opening system back door.
[0023] First, in the lifting system back door, when the back door 3 is closed, as shown
in FIG. 3, the back door inner surface 3a abuts on the inclined protrusion 22a in
the hollow seal member 22 at the angle of 70 degrees with respect to the weatherstrip
2 with the attachment angle of 35 degrees. Then, the hollow seal member 22 is pushed
by the back door 3, is folded properly with the reaction force allowing the hollow
seal member 22 to be restored, and seals the back doors 3 by means of elastic force
thereof.
[0024] Meanwhile, in the lateral opening system back door, when the back door 3 is closed,
as shown in FIG. 4, the back door inner surface 3a abuts on the inclined protrusion
22a in the hollow seal member 22 at the angle of 0 degree as the horizontal direction
with respect to the weatherstrip 2 with the attachment angle of 35 degrees. Then,
the hollow seal member 22 is pushed by the back door 3, and is collapsed while being
biased to the outside direction (upward direction of the vehicle body) of the back
door opening. At this time, the hollow seal member 22 is collapsed so as to lie in
the outside direction of the back door opening as shown by arrow E in FIG. 4. However,
the hollow seal member 22 is supported by the lying control rib 21b formed integrally
on the base member 21, and is controlled from lying. Then, when the back door 3 is
completely closed, the collapsed hollow seal member 22 seals the back door 3 by means
of the elastic force thereof.
[0025] On the lower end edge of the back door opening, a seal mode between the weatherstrip
2 and the back door 3 becomes the same seal mode as that on the upper end edge of
the back door opening. However, as shown in FIG. 5, a cross-sectional shape of the
weatherstrip 2 on the lower end edge becomes a shape turned upside down by 180 degrees
from the upper end edge.
[0026] On a side edge of the back door opening, there is no large difference in approach
angle of the back door 3 to the weatherstrip 2 between the lifting system back door
and the lateral opening system back door. Therefore, the back door 3 abuts on the
weatherstrip 2 in the same way between both of the systems, and seal modes of both
thereof become substantially the same. Specifically, in both of the case of the lifting
system back door and the case of the lateral opening system back door, the back door
3 abuts on the weatherstrip 2 at substantially the same angle. Accordingly, as shown
in FIG. 6, the hollow seal member 22 is collapsed perpendicularly to the back door
inner surface 3a. Then, when the back door 3 is completely closed, the hollow seal
member 22 seals the back door 3 by means of elastic force when the hollow seal member
22 is collapsed in a direction perpendicular to a protruding direction of the flange
11.
[0027] As described above, in the sealing structure of the back door opening according to
the first embodiment, the attachment angle of the weatherstrip 2 is set at the inclination
angle of 35 degrees, which is just the middle between the first angle (0 degree) and
the second angle (70 degrees). In such a way, commonality can be provided to the sealing
structure of the lifting system back door and the sealing structure of the lateral
opening system back door. Therefore, an effect that it becomes possible to reduce
manufacturing cost is obtained.
[0028] Moreover, the inclined protrusion 22a is formed into a shape to be directed to the
outside of the back door opening with respect to the attachment angle (35 degrees)
of the weatherstrip 2, and the lying control rib 21b that controls the lying of the
hollow seal member 22 is formed integrally on the base member 21 on the lying direction
side of the hollow seal member 22. In such a way, even if the attachment angle of
the weatherstrip 2 is set at the inclination angle of 35 degrees, which is just the
middle between the first angle (0 degree) and the second angle (70 degrees), it becomes
possible to control the lying of the hollow seal member 22.
[0029] Furthermore, when the attachment angle of the weatherstrip 2 is set at the inclination
angle of 35 degrees, which is just the middle between the first angle (0 degree) and
the second angle (70 degrees), a cross-sectional area of a water passage on the upper
end edge of the opening is narrowed in the case of the lifting system back door. Therefore,
there is an apprehension that, when the back door 3 is lifted, rainwater adhered onto
an upper end surface of the back door 3 may flow into a water passage 5, overflow
from the water passage 5, and flow down into a vehicle cabin. However, in the first
embodiment, on the side wall of the base member 21 in the weatherstrip 2, the lying
control rib 21b is formed, in which the tip end protrudes to the upward direction
of the vehicle body more than the collapsed hollow seal member 22. In such a way,
the cross-sectional area of the water passage can be ensured, and it becomes possible
to prevent the water from flowing down into the vehicle cabin from the back door opening.
[0030] Moreover, in the first embodiment, the fixing part 41 for the bumper 4 is provided
at the position hidden by the lying control rib 21b in the body panel 1 on the lower
end edge of the back door opening. In such a way, it becomes possible to allow the
lying control rib 21b to function as a design part that covers and hides the fixing
part 41 for the bumper 4.
(Second Embodiment)
[0031] Next, a description will be made of a second embodiment to which the present invention
is applied. In the second embodiment, the same constituent portions as those of the
first embodiment will not be shown, or the same reference numerals will be added thereto
to omit a description thereof, and a description will be made only of different points.
[0032] In a sealing structure of a back door opening in the second embodiment, a portion
provided with the hollow seal member 22 and the lying control rib 21 is reversed to
that in the structure of the first embodiment. Specifically, as shown in FIGS. 8 and
9, an inclined protrusion 22a of the second embodiment is formed toward an inside
(downward direction of the vehicle body) of the back door opening with respect to
the attachment angle (35 degrees) of the weatherstrip 2 on the contrary to the inclined
protrusion 22a of the first embodiment, which is directed to the outside of the back
door opening. Moreover, a lying control rib 21d is formed integrally on the side wall
of the base member 21 on the lying direction side of the hollow seal member 22.
[0033] In the sealing structure of the back door opening according to the second embodiment,
as described above, the attachment angle of the weatherstrip 2 is set at the inclination
angle of 35 degrees, which is just the middle between the first angle (0 degree) and
the second angle (70 degrees). In such a way, as in the first embodiment, the commonality
can be provided to the sealing structure of the lifting system back door and the sealing
structure of the lateral opening system back door. Therefore, the effect that it becomes
possible to reduce the manufacturing cost is obtained.
[0034] Moreover, the construction is adopted, in which the inclined protrusion 22a is formed
into the mode to be directed to the inside of the back door opening with respect to
the attachment angle (35 degrees) of the weatherstrip 2, and the lying control rib
21d that controls the lying of the hollow seal member 22 is formed integrally on the
base member 21 on the lying direction side of the hollow seal member 22. In such a
way, even if the attachment angle of the weatherstrip 2 is set at the inclination
angle of 35 degrees, which is just the middle between the first angle (0 degree) and
the second angle (70 degrees), it becomes possible to control the lying of the hollow
seal member 22.
(Other Embodiments)
[0035] The description has been made above of the first embodiment and the second embodiment,
to which the present invention is applied, with reference to the drawings. However,
the present invention is not limited to the above-described embodiments. For example,
in the above-described first and second embodiments, the attachment angle of the weatherstrip
2 is set at the inclination angle of 35 degrees, which is just the middle between
the first angle (0 degree) suitable for the case of the lateral opening system back
door and the second angle (70 degrees) suitable for the case of the lifting system
back door. However, the attachment angle of the weatherstrip 2 just needs to be an
inclination angle between the first angle (0 degree) and the second angle (70 degrees).
It is most desirable that the attachment angle of the weatherstrip 2 be set at an
inclination angle of 35 to 40 degrees.
[0036] Moreover, in the above-described first and second embodiments, the hollow seal member
22 of the weatherstrip 2 is formed into the pantograph shape including the inclined
protrusion 22a brought into elastic contact with the back door inner surface 3a. However,
a hollow shape of the seal member 22 is arbitrary.
1. A sealing structure of a back door opening being suitable for a lifting system back
door (3) and a lateral opening system back door (3), comprising:
a body panel (1) comprising a flange (11) formed along the back door opening; and
a weatherstrip (2) attached onto the flange (11), the weatherstrip (2) comprising:
a base member (21) engaged with the flange (11); and
a hollow seal member (22) for ensuring sealing property between the body panel (1)
and the lifting system back door (3) or the lateral opening system back door (3) when
the back door (3) is closed,
wherein an attachment angle of the weatherstrip (2) onto the flange (11) on an upper
edge of the back door opening is set at an inclination angle between a first angle
and a second angle, the first angle being an angle in which the weatherstrip (2) is
attached so that the hollow seal member (22) can abut perpendicularly on a back door
inner surface (3a) when the lateral opening system back door (3) is closed, and the
second angle being an angle in which the weatherstrip (2) is attached so that the
hollow seal member (22) can abut perpendicularly on the back door inner surface (3a)
when the lifting system back door (3) is closed,
characterized in that
an inclined protrusion (22a), which controls a lying direction (E) of the hollow seal
member (22) when the hollow seal member (22) is pushed by the back door inner surface
(3a), is formed on the hollow seal member (22), and
a lying control rib (21b), which controls lying of the hollow seal member (22), is
provided integrally on the base member (21) on a lying direction side of the hollow
seal member (22).
2. A sealing structure of a back door opening according to claim 1, wherein the first
angle and the second angle are 0 degree and 70 degrees with respect to a line (X)
in a vehicle fore-and-aft direction, respectively.
3. A sealing structure of a back door opening according to claim 2, wherein the attachment
angle of the weatherstrip (2) is within a range from 35 to 40 degrees with respect
to the line (X) in the vehicle fore-and-aft direction.
4. A sealing structure of a back door opening according to claim 1, wherein the hollow
seal member (22) is formed into a pantograph shape.
5. A sealing structure of a back door opening according to claim 1 or 4, wherein the
lying control rib (21b) is formed integrally on the base member (21) so that a tip
end of the lying control rib (21 b) can protrude to an outside of the hollow seal
member (22) collapsed by the back door (3).
6. A sealing structure of a back door opening according to claim 5, wherein a fixing
part (41) for a bumper (4) is formed at a position hidden by the lying control rib
(21 b) in the body panel (1) on a lower end edge of the back door opening.
1. Dichtungsaufbau einer Rücktüröffnung, die für eine Hubsystem- Rücktür (3) und eine
Seitenöffnungssystem- Rücktür (3) geeignet ist, aufweisend:
ein Karosseriepanel (1), aufweisend einen Flansch (11), gebildet entlang der Rücktüröffnung;
und einen Dichtungsstreifen (2), verbunden auf dem Flansch (11), wobei der Dichtungsstreifen
(2) aufweist:
ein Basisteil (21) im Eingriff mit dem Flansch (11); und
ein hohles Dichtungsteil (22) zum Sicherstellen der Dichtungseigenschaften zwischen
dem Karosseriepanel (1) und der Hubsystem- Rücktür (3) oder der Seitenöffnungssystem-
Rücktür (3), wenn die Rücktür (3) geschlossen ist,
wobei ein Befestigungswinkel des Dichtungsstreifens (2) auf dem Flansch (11) an einer
oberen Kante der Rücktüröffnung mit einem Neigungswinkel zwischen einem ersten Winkel
und einem zweiten Winkel festgelegt ist, wobei der erste Winkel ein Winkel ist, in
dem der Dichtungsstreifen (2) so verbunden ist,
dass das hohle Dichtungsteil (22) in senkrecht an einer Rücktür- Innenoberfläche (3a)
anliegen kann, wenn die Seitenöffnungssystem- Rücktür (3) geschlossen ist, und der
zweite Winkel ein Winkel ist, in dem der Dichtungsstreifen (2) so verbunden ist, dass
das hohle Dichtungsteil (22) senkrecht an der Rücktür- Innenoberfläche (3a) anliegen
kann, wenn die Hubsystem- Rücktür (3) geschlossen ist,
dadurch gekennzeichnet, dass
ein geneigter Vorsprung (22a), der eine Lagerrichtung (E) des hohlen Dichtungsteils
(22) steuert, wenn das hohle Dichtungsteil (22) durch die Rücktür- Innenoberfläche
(3a) gedrückt wird, an dem hohlen Dichtungsteil (22) gebildet wird, und
eine Lagersteuerrippe (21 b), die die Lage des hohlen Dichtungsteils (22) steuert,
einstückig an dem Basisteil (21) auf einer Lagerrichtungsseite des hohlen Dichtungsteils
(22) vorgesehen ist.
2. Dichtungsaufbau einer Rücktüröffnung nach Anspruch 1, wobei der erste Winkel und der
zweite Winkel jeweils 0 Grad und 70 Grad in Bezug auf eine Linie (X) in einer Vorwärts-
Rückwärts- Richtung des Fahrzeuges betragen.
3. Dichtungsaufbau einer Rücktüröffnung nach Anspruch 2, wobei der Verbindungswinkel
des Dichtungsstreifens (2) innerhalb eines Bereiches von 35 bis 40 Grad in Bezug auf
die Linie (X) in einer Vorwärts- Rückwärts- Richtung des Fahrzeuges ist.
4. Dichtungsaufbau einer Rücktüröffnung nach Anspruch 1, wobei das hohle Dichtungsteil
(22) in einer Storchschnabelform gebildet ist.
5. Dichtungsaufbau einer Rücktüröffnung nach Anspruch 1 oder 4, wobei die Lagersteuerrippe
(21 b) einstückig an dem Basisteil (21) gebildet ist, so dass ein oberstes Ende der
Lagersteuerrippe (21 b) nach einer Außenseite des hohlen Dichtungsteils (22), zusammengedrückt
durch die Rücktür (3), vorspringen kann.
6. Dichtungsaufbau einer Rücktüröffnung nach Anspruch 5, wobei ein Befestigungsteil (41)
für einen Dämpfer (4) an einer Position, verborgen durch die Lagersteuerrippe (21
b) in dem Bodenpanel (1) an einer unteren Endkante der Rücktüröffnung, gebildet ist.
1. Structure d'étanchéité d'une ouverture de portière arrière, appropriée pour une portière
arrière à système de levage (3) et une portière arrière à système à ouverture latérale
(3), comprenant :
un panneau de corps (1) comprenant un rebord (11) formée le long de l'ouverture de
portière arrière ; et
une bande d'étanchéité (2) fixée sur le rebord (11), la bande d'étanchéité (2) comprenant
:
un élément de base (21) en prise avec le rebord (11) ; et
un élément d'étanchéité creux (22) pour garantir une propriété d'étanchéité entre
le panneau de corps (1) et la portière arrière à système de levage (3) ou la portière
arrière à système à ouverture latérale (3) lorsque la portière arrière (3) est fermée,
dans laquelle un angle de fixation de la bande d'étanchéité (2) sur le rebord (11)
sur un bord supérieur de l'ouverture de portière arrière est réglé à un angle d'inclinaison
entre un premier angle et un second angle, le premier angle étant un angle dans lequel
la bande d'étanchéité (2) est fixée de sorte que l'élément d'étanchéité creux (22)
puisse prendre appui perpendiculairement sur une surface intérieure de portière arrière
(3a) lorsque la portière arrière à système à ouverture latérale (3) est fermée, et
le second angle étant un angle dans lequel la bande d'étanchéité (2) est fixée de
sorte que l'élément d'étanchéité creux (22) puisse prendre appui perpendiculairement
sur la surface intérieure de portière arrière (3a) lorsque la portière arrière à système
de levage (3) est fermée,
caractérisé en ce que
une protubérance inclinée (22a), qui commande une direction de positionnement étendu
(E) de l'élément d'étanchéité creux (22) lorsque l'élément d'étanchéité creux (22)
est poussé par la surface intérieure de portière arrière (3a), est formée sur l'élément
d'étanchéité creux (22), et
une nervure de commande de positionnement étendu (21b), qui commande le positionnement
étendu de l'élément d'étanchéité creux (22), est prévue de façon intégrée sur l'élément
de base (21) sur un coté de direction de positionnement étendu de l'élément d'étanchéité
creux (22).
2. Structure d'étanchéité d'une ouverture de portière arrière selon la revendication
1, dans laquelle le premier angle et le second angle sont 0 degré et 70 degrés par
rapport à une ligne (X) dans un sens longitudinal du véhicule, respectivement.
3. Structure d'étanchéité d'une ouverture de portière arrière selon la revendication
2, dans laquelle l'angle de fixation de la bande d'étanchéité (2) dans une plage de
35 à 40 degrés par rapport à la ligne (X) dans le sens longitudinal du véhicule.
4. Structure d'étanchéité d'une ouverture de portière arrière selon la revendication
1, dans laquelle l'élément d'étanchéité creux (22) présente une forme de pantographe.
5. Structure d'étanchéité d'une ouverture de portière arrière selon la revendication
1 ou 4, dans laquelle la nervure de commande de positionnement étendu (21b) est formée
de façon intégrée sur l'élément de base (21) de sorte qu'une extrémité de la nervure
de commande de positionnement étendu (21b) puisse faire saillie jusqu'à un extérieur
de l'élément d'étanchéité creux (22) aplati par la portière arrière (3).
6. Structure d'étanchéité d'une ouverture de portière arrière selon la revendication
5, dans laquelle une partie de fixation (41) pour un pare-chocs (4) est formée dans
une position cachée par la nervure de commande de positionnement étendu (21b) dans
le panneau de corps (1) sur un bord d'extrémité inférieure de l'ouverture de portière
arrière.